GWD-8-40

RichardTian

弄个数字带入验证：
原来：
全国吸烟总量1000盒
全国人口总数1000人
人均：1000/1000=1盒/人

后来：
全国吸烟总量1000+34盒

全国人口总数1000+50人
人均：1034/1050 < 1盒/人

选B，像在做数学题。

    

    

天蝎座1107

GWD-4-Q8

From 1980 to 1989, total consumption of fish in the country of Jurania increased by 4.5 percent, and total consumption of poultry products there increased by 9.0 percent.  During the same period, the population of Jurania increased by 6 percent, in part due to immigration to Jurania from other countries in the region.

If the statements above are true, which of the following must also be true on the basis of them?

1. During the 1980’s in Jurania, profits of wholesale distributors of poultry products increased at a greater rate than did profits of wholesale distributors of fish. 和profits没有关系。consumption增加推不出profits的情况同下面GWD-8-40一个骗人招数!
2. For people who immigrated to Jurania during the 1980’s, fish was less likely to be a major part of their diet than was poultry.这个选项想说新来了immigrates是人口增加的部分原因,而吃鱼的增长比吃poultry的增长少，那么推的是由于immigrate人更爱吃poultry.其实推不出的，原先吃poultry的人更加疯狂爱吃poultry，也可以导致poultry consumption增加比fish consumption增加好多。同下面的GWD-8-40里同颜色的选项一个骗人招数!
3. In 1989 Juranians consumed twice as much poultry as fish.很好排除,没有poultry和fish的基数，这个是推不出的!
4. For a significant proportion of Jurania’s population, both fish and poultry products were a regular part of their diet during the 1980’s.不知道fish和poultry以外的其他diet情况，根本没办法判断fish和poultry是不是regular part of their diet
5. Per capita consumption of fish in Jurania was lower in 1989 than in 1980. 正确答案，看到下面GWD-8-40一样的正确答案!

GWD-8-40

From 1973 to 1976, total United States consumption of cigarettes increased 3.4 percent,

and total sales of chewing tobacco rose 18.0 percent. During the same period, total

United States population increased 5.0 percent.

If the statements above are true, which of the following conclusions can be properly drawn?

A.
                    United States manufacturers of tobacco products had higher profits in 1976 than in 1973.

B. Per capita consumption of cigarettes in the United States was lower in 1976 than in 1973.

C. The proportion of nonsmokers in the United States population dropped slightly between 1973 and 1976.
                

D. United States manufacturers of tobacco products realize a lower profit on cigarettes than on chewing tobacco.
                    

E. A large percentage of United States smokers switched from cigarettes to chewing tobacco between 1973 and 1976.

这个题和本帖问的GWD8-40是一模一样!!!大家应当把GWD里的同类思维的题总结再一起，这样GMAT的骗人招数自然明了。那么我们现在把这两道题对比一下看看错误选项有什么相同地方。

1973 consumption of cigarettes-a          1976-1.034a

1973-Tobacco-b                                         1976-1.18b

1973-Population c                                        19761.05c

a/c当然大于1.034a/1.05c所以B

mdautobox

ls~~很给力啊！！！！！！！

海砂516

GWD-4-Q8

From 1980 to 1989, total consumption of fish in the country of Jurania increased by 4.5 percent, and total consumption of poultry products there increased by 9.0 percent.  During the same period, the population of Jurania increased by 6 percent, in part due to immigration to Jurania from other countries in the region.

If the statements above are true, which of the following must also be true on the basis of them?

During the 1980’s in Jurania, profits of wholesale distributors of poultry products increased at a greater rate than did profits of wholesale distributors of fish. 和profits没有关系。consumption增加推不出profits的情况同下面GWD-8-40一个骗人招数!For people who immigrated to Jurania during the 1980’s, fish was less likely to be a major part of their diet than was poultry.这个选项想说新来了immigrates是人口增加的部分原因,而吃鱼的增长比吃poultry的增长少，那么推的是由于immigrate人更爱吃poultry.其实推不出的，原先吃poultry的人更加疯狂爱吃poultry，也可以导致poultry consumption增加比fish consumption增加好多。同下面的GWD-8-40里同颜色的选项一个骗人招数!In 1989 Juranians consumed twice as much poultry as fish.很好排除,没有poultry和fish的基数，这个是推不出的!For a significant proportion of Jurania’s population, both fish and poultry products were a regular part of their diet during the 1980’s.不知道fish和poultry以外的其他diet情况，根本没办法判断fish和poultry是不是regular part of their dietPer capita consumption of fish in Jurania was lower in 1989 than in 1980. 正确答案，看到下面GWD-8-40一样的正确答案!

GWD-8-40
From 1973 to 1976, total United States consumption of cigarettes increased 3.4 percent,



and total sales of chewing tobacco rose 18.0 percent. During the same period, total



United States population increased 5.0 percent.



If the statements above are true, which of the following conclusions can be properly drawn?



A.
                   United States manufacturers of tobacco products had higher profits in 1976 than in 1973.



B. Per capita consumption of cigarettes in the United States was lower in 1976 than in 1973.



C. The proportion of nonsmokers in the United States population dropped slightly between 1973 and 1976.




D. United States manufacturers of tobacco products realize a lower profit on cigarettes than on chewing tobacco.




E. A large percentage of United States smokers switched from cigarettes to chewing tobacco between 1973 and 1976.


这个题和本帖问的GWD8-40是一模一样!!!大家应当把GWD里的同类思维的题总结再一起，这样GMAT的骗人招数自然明了。那么我们现在把这两道题对比一下看看错误选项有什么相同地方。
1973 consumption of cigarettes-a          1976-1.034a
1973-Tobacco-b                                         1976-1.18b
1973-Population c                                        19761.05c
a/c当然大于1.034a/1.05c所以B

-- by 会员 天蝎座1107 (2009/1/24 12:54:00)

如此说来这种什么牵扯到两个事物的百分比增减+人口增减问题,如果未给出基数，则俩物不能相比，相比需慎重...

rustraff

顶楼主！